<template>
<div>
     <!-- 面包屑 -->
 <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>商品管理</el-breadcrumb-item>
  <el-breadcrumb-item>商品列表</el-breadcrumb-item>
</el-breadcrumb>

<!-- 卡片视图 -->
<el-card>
<!-- 提示信息 -->
  <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
<!-- 步骤条 -->
  <el-steps :space="200" :active="activeIndex-0"        finish-status="success" align-center>
    <el-step title="基本信息"></el-step>
    <el-step title="商品参数"></el-step>
    <el-step title="商品属性"></el-step>
    <el-step title="商品图片"></el-step>
    <el-step title="商品内容"></el-step>
    <el-step title="完成"></el-step>
   </el-steps>

 <!-- tab栏区域 -->
 <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
  
    <el-tabs  v-model="activeIndex" tab-position="left" :before-leave="beforeTabLeave" @tab-click="tabClicked">
    <el-tab-pane label="基本信息" name="0">
   <el-form-item label="商品名称" prop="goods_name">
       <el-input v-model="addForm.goods_name"></el-input>
   </el-form-item>
    <el-form-item label="商品价格" prop="goods_price">
       <el-input v-model="addForm.goods_price" type="number"></el-input>
   </el-form-item>
    <el-form-item label="商品重量" prop="goods_weight">
       <el-input v-model="addForm.goods_weight" type="number"></el-input>
   </el-form-item>
    <el-form-item label="商品数量" prop="goods_number">
       <el-input v-model="addForm.goods_number" type="number"></el-input>
   </el-form-item>
   <el-form-item label="商品分类" prop="goods_cat">
    <el-cascader
    v-model="addForm.goods_cat"
    :options="catelist"
    :props="cateProps"
    @change="handleChange" clearable ></el-cascader>

   </el-form-item>
    </el-tab-pane>
    <!-- 商品参数标签页 -->
    <el-tab-pane label="商品参数" name="1">
      <el-form-item :label="item.attr_name" v-for="item   in manyTableData"  :key="item.attr_id">
        <el-checkbox-group v-model="item.attr_vals" >
          <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border>
           </el-checkbox>
        </el-checkbox-group>
      </el-form-item>
    </el-tab-pane>
      <!-- 商品属性标签页 -->
    <el-tab-pane label="商品属性" name="2">
       <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
        <el-input v-model="item.attr_name"></el-input>
      </el-form-item>
    </el-tab-pane>
<!-- 商品图片标签页 -->
<!-- action表示要上传到后台api的地址 -->
    <el-tab-pane label="商品图片" name="3">
      <el-upload :action='uploadURL'
        :on-preview="handlePreview"
        :on-remove="handleRemove"
        list-type="picture" :headers="headerObj" :on-success="handleSuccess" >
        <el-button size="small" type="primary">点击上传</el-button>
   </el-upload>
    </el-tab-pane>
    <el-tab-pane label="商品内容" name="4">
      <!-- 富文本编辑器 -->
      <quill-editor v-model="addForm.goods_introduce"/>
    
      <!-- 添加按钮 -->
      <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
    </el-tab-pane>
  </el-tabs>
  </el-form>


</el-card>
<!-- 图片预览 -->
<el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%"
  >
 <img :src="previewPath" alt="" class="previewImg">
  
</el-dialog>
</div>
</template>
<script>
import _ from 'lodash'
export default {
    data(){
        return{
         //tabs 默认选中项索引
         activeIndex:'0',
         //  表单数据
         addForm:{
          goods_name:'',
          goods_price:'0',
          goods_weight:'0',
          goods_number:'0',
          //级联选择器数据
          goods_cat:[1,3,6],
          pics:[],
          goods_introduce:'',
          attrs:[]
         },
         //  表单数据验证规则
         addFormRules:{
          goods_name:[
               { required: true, message: '请输入商品名称', trigger: 'blur' }
          ], goods_price:[
               { required: true, message: '请输入商品价格', trigger: 'blur' }
          ], goods_weight:[
               { required: true, message: '请输入商品重量', trigger: 'blur' }
          ], goods_number:[
               { required: true, message: '请输入商品价格', trigger: 'blur' }
          ],goods_cat:[
               { required: true, message: '请输入商品分类', trigger: 'change' }
          ]
         },
         //商品分类---级联选择器
         catelist:[],
         //级联选择器
         cateProps:{
          expandTrigger:'hover',
          label:'cat_name',
          value:'cat_id',
          children:'children'
         },
         //  动态参数数据
         manyTableData:[],
         //  静态属性数据
         onlyTableData:[],
         //upload地址
         uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
         //  给请求头添加token
         headerObj:{
           Authorization:sessionStorage.getItem('token')
         },
         //预览图片路径
         previewPath:'',
         //控制预览对话框
         previewVisible:false

      
        }
    },
    methods:{
        // 获取级联选择器中的商品数据
        async getCateList(){
          let {data:res}= await this.$http.get('categories')
         if(res.meta.status !==200){
         return this.$message.error('获取商品数据失败')
         }
         this.catelist=res.data
         //  console.log(this.catelist);
    
        },
        //级联选择器重选时触发
        handleChange(){
         if(this.addForm.goods_cat.length !==3){
           this.addForm.goods_cat=[]
         }
        },
        //切换下个tab时切换
        beforeTabLeave(activeName,oldActiveName){
         if(this.addForm.goods_cat.length !==3&&oldActiveName==0){
          this.$message.error('请选择的商品分类')
          return false
         }
        },
        //tabs 的点击事件
        async tabClicked(){
          if(this.activeIndex=='1'){
             let {data:res}= await this.$http.get(`categories/${this.cateId}/attributes`,{
              params:{
                sel:'many'
              }
             })
             if(res.meta.status !==200){
               return this.$message.error('获取商品数据失败')
            }
            this.$message.success('获取商品数据成功')
            res.data.forEach(item=>{
             item.attr_vals=item.attr_vals? item.attr_vals.split(' '):[]
              
            })
            this.manyTableData=res.data
            console.log(this.manyTableData);
            
           
           
            
          }else if(this.activeIndex=='2'){
             let {data:res}= await this.$http.get(`categories/${this.cateId}/attributes`,{
              params:{
                sel:'only'
              }
             })
             if(res.meta.status !==200){
               return this.$message.error('获取商品数据失败')
            }
            this.$message.success('获取商品数据成功')
            res.data.forEach(item=>{
             item.attr_vals=item.attr_vals? item.attr_vals.split(' '):[]
              
            })
            this.onlyTableData=res.data
            console.log(this.onlyTableData);
            
           
           
            
          }
        },
        //处理图片预览
        handlePreview(file){
         console.log(file);
         this.previewPath=file.response.data.url
         this.previewVisible=true
        },
        //处理图片的删除
        handleRemove(file){ 
         const filePath=file.response.data.tmp_path
         const i= this.addForm.pics.findIndex(x=>x.pic===filePath)
         this.addForm.pics.splice(i,1)
         console.log(this.addForm);
        },
        //上传成功后调用
        handleSuccess(res){
         let pic={pic:res.data.tmp_path}
         this.addForm.pics.push(pic)
         console.log(this.addForm); 
        },
        async add(){
          this.$refs.addFormRef.validate(valid=>{
            if(!valid){
              return this.$message.error('请填写合法的表单信息')
            }
          })
          //深拷贝方式一
         let newAddForm=_.cloneDeep(this.addForm)
         newAddForm.goods_cat=newAddForm.goods_cat.join(',')
       
         //深拷贝方式二
        // let newAddForm=JSON.parse(JSON.stringify(this.addForm))
        //  newAddForm.goods_cat=newAddForm.goods_cat.join(',')
        //处理动态参数
        this.manyTableData.forEach(item=>{
          const newInfo={
            attr_id:item.attr_id,
            attr_value:item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        //处理静态属性
        this.onlyTableData.forEach(item=>{
          const newInfo={
            attr_id:item.attr_id,
            attr_value:item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
          console.log(this.addForm.attrs);
         //发起请求添加商品
          let {data:res}= await this.$http.post('goods',newAddForm)
          if(res.meta.status !==201){
          return this.$message.error('添加商品失败')
         }
          this.$message.success('添加商品成功')
          this.$router.push('/goods')
        }
        
    },
    //计算属性
    computed:{
      // 当选中三级分类时
      cateId(){
        if(this.addForm.goods_cat.length===3){
          return this.addForm.goods_cat[2]
        }
        return null
      }
    },
    //钩子函数
    created(){
      this.getCateList()
    }
}
</script>
<style lang="less" scoped>
 .el-checkbox {
  margin: 0 10px 0 0 !important;
 }
 .previewImg {
  width: 100%;
}

.btnAdd {
  margin-top: 15px;
}
</style>